petya
75601988c2
- Cover, TOC, 5 dividers, 3 recap slides - 5 sections (chains, langgraph, deepagents, openswe, ecosystem) - design-system.js with theme tokens + 9 helper functions - research/: timeline + sources + per-tech notes - final-compile.js + merge.js for rebuild pipeline - output/: langchain-evolution.pptx (2.3 MB) + langchain-evolution.pdf (1.1 MB) + 7 sample previews
57 lines
1.9 KiB
JavaScript
57 lines
1.9 KiB
JavaScript
// Slide 04: Hello world -- first chain with init_chat_model
|
|
// Code slide: the simplest possible working example.
|
|
|
|
const ds = require('./design-system');
|
|
|
|
function createSlide(pres, theme) {
|
|
const slide = pres.addSlide();
|
|
ds.helpers.slideBase(slide, pres, theme);
|
|
|
|
ds.helpers.addHeader(slide, pres, theme, {
|
|
eyebrow: 'STAGE 1: CHAINS',
|
|
section: 'Hello world',
|
|
title: 'Первый вызов модели',
|
|
sectionNumber: 1,
|
|
});
|
|
|
|
ds.helpers.addCodeBlock(slide, pres, theme, {
|
|
x: 0.5, y: 1.5, w: 6.4, h: 3.25,
|
|
language: 'python',
|
|
filePath: 'examples/hello.py',
|
|
code: [
|
|
'# Один универсальный инициализатор для всех провайдеров',
|
|
'from langchain.chat_models import init_chat_model',
|
|
'',
|
|
'# Формат: "<provider>:<model>"',
|
|
'model = init_chat_model("openai:gpt-4.1-mini")',
|
|
'',
|
|
'# invoke -> BaseMessage; нам нужен .content',
|
|
'result = model.invoke("Say hello in one sentence")',
|
|
'print(result.content)',
|
|
'',
|
|
'# >>> "Hello! How can I help you today?"',
|
|
].join('\n'),
|
|
});
|
|
|
|
// Right side: explanation card
|
|
ds.helpers.addCallout(slide, pres, theme, {
|
|
x: 7.1, y: 1.5, w: 2.4, h: 1.55,
|
|
kind: 'info',
|
|
title: 'init_chat_model',
|
|
text: 'Один фабричный вызов вместо ChatOpenAI / ChatAnthropic / ChatGoogle отдельно.',
|
|
});
|
|
|
|
ds.helpers.addCallout(slide, pres, theme, {
|
|
x: 7.1, y: 3.2, w: 2.4, h: 1.55,
|
|
kind: 'success',
|
|
title: 'Что вернется',
|
|
text: 'Объект AIMessage: content, response_metadata (usage, model_name), id, tool_calls.',
|
|
});
|
|
|
|
ds.helpers.addSourceLine(slide, pres, theme, {
|
|
source: 'python.langchain.com/docs/how_to/chat_models_universal_init/',
|
|
});
|
|
ds.helpers.addPageNumber(slide, pres, theme, 4);
|
|
}
|
|
|
|
module.exports = { createSlide }; |